CN109113833B - Dual-cavity independent oil-gas separator - Google Patents

Abstract

The invention discloses a dual-chamber independent oil and gas separator, which includes a separator body plate, a full-load side oil and gas separation assembly and a partial load side oil and gas separation assembly; the partial load side oil and gas separation assembly is installed on the separator body, so The full load side oil and gas separation assembly is installed on the separation body plate and is located on the opposite side of the partial load side oil and gas separation assembly. The present invention sets up two oil and gas separation mechanisms, namely the partial load side oil and gas separation mechanism and the full load side oil and gas separation mechanism. The two are respectively connected to the intake manifold side and the clean air pipe after the air filter. Since the intake manifold The difference in pressure between the pipe side and the clean air pipe air filter can guide part-load oil and gas and full-load oil and gas respectively into the corresponding separation mechanism for separation, thereby improving the efficiency of oil and gas separation. The filtered oil returns to the oil pan through respective reservoirs at both ends.

Description

A dual-chamber independent oil and gas separator

Technical field

The invention belongs to the technical field of automobile engines, and specifically relates to a dual-chamber independent oil and gas separator.

Background technique

When the automobile engine is working, the high-temperature and high-pressure gas burned in the combustion chamber during the power stroke (both the intake and exhaust valves are closed) will escape into the crankcase along the gap between the piston assembly and the cylinder wall. The engine exhaust gas that escapes into the crankcase contains water vapor, sulfur dioxide and other impurities produced by incomplete combustion. The condensation of water vapor emulsifies the engine oil, and the presence of sulfur dioxide will cause the engine oil to deteriorate and cause corrosion of mechanical parts. Therefore, the engine is equipped with a crankcase ventilation device to discharge these exhaust gases, and at the same time, the oil in the blow-by gas is effectively separated and returned to the lubrication system to avoid burning oil. The oil and gas separator is installed in the channel of the crankcase ventilation device to separate oil mist. The existing oil and gas separation device separates full-load oil and gas and part-load oil and gas in a set of separation mechanisms. The setting method of this separation mechanism will make the oil and gas separation efficiency low, and the separation efficiency will decrease as the driving mileage increases. reduce.

Contents of the invention

The object of the present invention is to solve the above-mentioned deficiencies in the prior art and provide a dual-chamber independent oil and gas separator.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a dual-chamber independent oil and gas separator, including a separator body plate, a full-load side oil and gas separation assembly and a partial load side oil and gas separation assembly; the partial load oil and gas separation assembly Installed on the separator body, the part-load oil and gas separation assembly includes a first coarse separation mechanism, a first fine separation mechanism connected to the first coarse separation mechanism, and is opened on the separator body plate and connected with the first coarse separation mechanism. The first air inlet connected to the first coarse separation mechanism, and the side of the first fine separation mechanism away from the first coarse separation mechanism is connected to the intake manifold of the engine;

The full load side oil and gas separation assembly is installed on the separation body plate and is located on the opposite side of the partial load side oil and gas separation assembly. The full load side oil and gas separation assembly includes a second coarse separation mechanism and the third A second fine separation mechanism connected to the two coarse separation mechanisms, a second air inlet opened on the separator body plate and connected to the second coarse separation mechanism, the second fine separation mechanism being far away from the second One side of the coarse separation mechanism is connected to the engine's air filter.

Further, the first rough separation mechanism includes a rough separation chamber provided on the separator body. The bottom of the rough separation chamber has an opening connected to the first air inlet. The rough separation chamber There is a first partition extending upward on the right side of the bottom opening. The top of the first partition is connected to a second partition inclined to the left side of the first partition. The second partition is close to the One side of the bottom of the coarse separation chamber has a filter plate extending to the first partition. The top of the coarse separation chamber is provided with a third partition extending downward. The third partition is connected with the second partition. A vent is formed between the plates; the second rough separation mechanism has the same structure as the first rough separation mechanism.

Further, the first fine separation mechanism includes a fine separation chamber, the fine separation chamber is located on one side of the coarse separation chamber, and the side of the fine separation chamber close to the coarse separation chamber has a fourth partition, The fourth partition is distributed with air inlet holes for passing oil and gas. The fourth partition is also provided with a filter device. The filter device fits the air inlet holes and the bottom of the filter device has a At the air outlet, the filtering device is provided with filter cotton for filtering oil and gas.

Further, the area between the first partition and the third partition forms a transition chamber, and the bottom of the transition chamber is provided with a small hole oil return groove recessed downward; in the full-load side oil and gas separation assembly It also has a transition chamber and a small hole oil return groove.

Further, a PCV valve is provided between the first fine separation chamber and the engine intake manifold side.

Furthermore, a one-way valve is provided at the connection between the first fine separation mechanism and the intake manifold; a one-way valve is also provided at the connection between the second fine separation mechanism and the air filter.

Further, the separator body plate is provided with a mounting hole for placing a high-voltage coil between the full-load side oil and gas assembly and the part-load side oil and gas assembly.

Further, a filler cap for added engine oil is provided on the separator body plate, and the filler cap is located on a side of the first rough separation chamber away from the first fine separation chamber.

Further, mounting screw holes are provided on the surrounding edges of the separator body plate.

Due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

The present invention sets up two oil and gas separation mechanisms, namely a partial load side oil and gas separation mechanism and a full load side oil and gas separation mechanism, which are connected to the intake manifold side and the clean air pipe behind the air filter respectively. The pressure difference between the crankcase pressure (PCC) and the air intake duct (PIM) and clean air pipe (PB-TC) determines the direction of crankcase blow-by air. When the supercharger is not working, PB-TC>PCC>PIM, the blowby gas path is the first separation path, which is separated through the partial load side oil and gas separation mechanism, and the separated oil and gas enters the intake manifold side; After the supercharger intervenes, PIM>PCC>PB-TC, the blow-by air path is the second separation path. The oil and gas are separated through the full-load side oil and gas separation mechanism, and the separated oil and gas enter the clean air pipe behind the air filter. By setting up two separation mechanisms, oil and gas can be separated in a more refined manner, thereby improving the efficiency of oil and gas separation.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the present invention;

Figure 2 is a cross-sectional view of the part-load side oil and gas assembly of the present invention;

Figure 3 is a cross-sectional view of the full-load side oil and gas separation assembly of the present invention.

Reference signs: 1-separator body plate, 2-part load side oil and gas component, 210-first coarse separation mechanism, 211-first coarse separation chamber, 212-opening, 213-first partition plate, 214-second Partition plate, 215-filter plate, 216-third partition plate, 217-vent, 220-first fine separation mechanism, 221-fine separation chamber, 222-fourth partition plate, 223-air inlet hole, 224- Filter device, 225-first fine separation oil storage tank, 230-first air inlet, 240-PCV valve, 250-first transition chamber, 260-first small hole oil return tank, 270-intake manifold side, 3 -Full load side oil and gas assembly, 310-second coarse separation mechanism, 311-second coarse separation chamber, 320-second fine separation mechanism, 330-second air inlet, 340-second transition chamber, 350-second Small hole oil return tank, 360-second fine separation oil storage tank, 370-fifth partition, 380-clean air pipe side behind air filter, 4-fuel filler cap, 5-installation hole, 6-installation screw hole.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but rather to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is customarily placed when used. It is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

The terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

The terms "parallel", "perpendicular", etc. do not mean that parts are required to be absolutely parallel or perpendicular, but may be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical". It does not mean that the structure must be completely parallel, but can be slightly tilted.

The terms "horizontal," "vertical," "overhanging," etc. do not imply a requirement that the part be absolutely horizontal or overhanging, but may be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical". It does not mean that the structure must be completely horizontal, but can be slightly tilted.

In addition, terms such as "roughly" and "basically" are intended to illustrate that the relevant content does not require absolute accuracy, but may have certain deviations. For example: "roughly equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equal" during actual production and operation, there is generally a certain deviation. Therefore, in addition to absolute equality, "approximately equal" also includes the above-mentioned situations where there is a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "roughly" and "basically" have similar meanings to the above.

In the description of the present invention, it should also be noted that, unless otherwise clearly stated and limited, the terms "set", "installation", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, It can also be detachably connected or integrally connected; it can be directly connected or indirectly connected through an intermediate medium; it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

The invention discloses a dual-chamber independent oil and gas separator, as shown in Figure 1, which includes a separator body plate 1, a partial load side oil and gas separation assembly 2 and a full load side oil and gas separation assembly 3; the partial load oil and gas separation assembly 2 is installed on the separator body 1, and the full-load side oil and gas separation assembly 3 is also installed on the separator body 1 and is located on the opposite side of the part-load oil and gas separation assembly 2. The part-load oil and gas separation assembly 2 includes a first coarse separation mechanism 210 and a first fine separation mechanism 220 connected to the first coarse separation mechanism 210. It is opened on the separator body plate 1 and connected with the first fine separation mechanism 220. The first air inlet 230 is connected to the coarse separation mechanism 210 for allowing crankcase blowby gas to enter. The side of the first fine separation mechanism 220 away from the first coarse separation mechanism 210 is connected to the intake manifold of the engine. , a PCV valve 240 is also provided between the first fine separation mechanism 220 and the intake manifold of the engine. The part-load oil and gas that enters the part-load oil and gas separation assembly 2 through the first air inlet 230 enters the first coarse separation mechanism 210 for the first separation, and then enters the first fine separation mechanism 220 for the second separation. , and finally passes through the PCV valve 240 and then enters the engine intake manifold side from the air outlet.

The full-load side oil and gas separation assembly 3 includes a second coarse separation mechanism 310 and a second fine separation mechanism 320 connected to the second coarse separation mechanism. It is opened on the separator body 1 and connected with the second coarse separation mechanism. The separation mechanism 310 is connected to a second air inlet 330 for allowing crankcase blow-by air to enter. The side of the second fine separation mechanism 320 away from the second coarse separation mechanism 310 is connected to the air filter of the engine. The full-load side oil and gas that enters the full-load oil and gas separation assembly 3 through the second air inlet 230 first enters the second coarse separation mechanism 310 for first separation, and then enters the second fine separation mechanism 320 for separation. It separates for the second time and finally enters the clean air pipe side 380 behind the engine air filter through the air outlet.

In the present invention, the first rough separation mechanism 210 includes a rough separation chamber 211 provided on the separator body 1. The rough separation chamber 211 is covered on the separator body 1. The rough separation chamber 211 is provided on the separator body 1. The bottom of the cavity 211 has an opening 212 connected with the first air inlet 230. Partial load side oil and gas enter the rough separation chamber 211 through the opening 212. The right side of the bottom opening of the rough separation chamber 211 has A first partition 213 extends upward, and the top end of the first partition 213 is connected to a second partition 214 that is inclined toward the left side of the first partition 213. There is a filter plate 215 extending to the first partition plate 213 on the side of the second partition plate 214 close to the bottom of the coarse separation chamber 211. A third filter plate 215 extending downward is provided on the top of the coarse separation chamber 211. A vent 217 is formed between the partition plate 216, the third partition plate 216 and the second partition plate 214. The part-load side oil that enters the coarse separation chamber 211 through the opening 212 will collide with the filter plate 215 and the second partition plate 214 during the rising process. At the same time, the inclined arrangement of the second partition plate 214 can change the flow of oil and gas. The moving direction causes the oil gas to move along the direction in which the second partition plate 214 extends upward, and then the oil gas moves around the second partition plate 214 and leaves the rough separation chamber 211 through the vent 217 .

The first fine separation mechanism 220 in the present invention includes a fine separation chamber 221. The fine separation chamber 221 is located on one side of the coarse separation chamber 211. The fine separation chamber 221 has a fourth partition 222 on the side close to the coarse separation chamber 211. There is a certain distance between the cavity 221 and the coarse separation cavity 211, so a first transition cavity 250 is formed between the fourth partition plate 222 and the first partition plate 213, and a first transition cavity 250 is recessed downward at the bottom of the first transition cavity 250. In the first small hole oil return groove 260, the first separated oil and gas leaving the first rough separation chamber 211 enters the first transition chamber 250. After the oil and gas are separated, the oil falls to the bottom of the first transition chamber 250 and enters the first transition chamber 250. A small hole returns to the oil groove 260. The fourth partition 222 is distributed with air inlet holes 223 for passing oil and gas. The fourth partition 222 is also provided with a filter device 224. The filter device 224 fits the air inlet holes 223 and has an air outlet at the bottom of the filter device. , the filtering device 224 is provided with filter cotton for filtering small molecule oil and gas. The oil and gas separated for the first time will hit the fourth partition 222 after passing through the first transition chamber 250 and enter the filter device 224 through the air inlet holes 223 distributed on the fourth partition 222. The oil and gas are separated from the filter device 224. The filter cotton in 224 is further separated after contact, and the separated gas is discharged from the bottom of the filter device 224. A PCV valve 240 is provided between the fine separation chamber 221 and the intake manifold side 270 of the engine. The gas exhausted from the filter device 224 passes through the PCV valve 240 before entering the intake manifold side 270 of the engine. At the same time, it is partially loaded. A one-way valve is provided at the connection between the side oil and gas assembly 2 and the intake manifold side 270 of the engine. The one-way valve can ensure that the separated gas enters the intake manifold side 270, and the gas in the intake manifold side 270 There will be no backflow into the oil and gas component 2 on the part load side. There is a fine separation oil storage tank 225 recessed downward at the bottom of the fine separation chamber 221. The oil in the oil and gas after fine separation will be discharged from the bottom of the filter device 224 and fall into the fine separation oil storage tank 225.

In the present invention, the second coarse separation mechanism 310 and the second fine separation mechanism 320 in the full load side oil and gas assembly 3 have the same structure as the first coarse separation mechanism 210 and the first fine separation mechanism 220. On the full load side oil and gas The assembly 3 is also provided with a second transition chamber 340 located between the second coarse separation mechanism 310 and the second fine separation mechanism 320, a second small hole oil return groove 350 located below the second transition chamber 340, and a second oil return groove 350 located below the second transition chamber 340. The fine separation mechanism 310 is away from the second fine separation oil storage tank 360 below the second transition chamber 340. The difference between the partial load side oil and gas assembly 2 and the full load side oil and gas assembly 3 is that it also has a PCV valve 240. At the same time, a downwardly extending fifth partition 370 is provided at the top of the second transition chamber 340 of the full-load side oil and gas separation mechanism 3. The oil and gas that leaves the second coarse separation mechanism 310 and has been separated for the first time enters the second transition chamber. After the chamber 340, the oil separated from the oil and gas falls to the bottom of the second transition chamber 340 and enters the second small hole oil return tank 350. At the same time, the oil and gas will hit the fifth partition 370 to separate the oil and gas again. The coarsely separated oil and gas then pass through the second fine separation mechanism 320 and then enter the clean air pipe side 380 behind the air filter.

In the present invention, one side of the part-load side oil and gas assembly 2 is also provided with a filler cap 4 opened on the separator body. The filler cap 4 is used to add engine oil into the engine.

In the present invention, the separator body plate 1 is provided with a mounting hole 5 for placing a high-voltage coil located between the full-load side oil and gas assembly 3 and the part-load side oil and gas assembly 2 .

In the present invention, mounting screw holes 6 are provided on the surrounding edges of the separator body plate 1 .

In the present invention, overflow gaps are provided around the edges of the separator body plate 1 .

The present invention sets up two oil and gas separation mechanisms, namely a partial load side oil and gas separation mechanism and a full load side oil and gas separation mechanism, which are connected to the intake manifold side and the clean air pipe behind the air filter respectively. A supercharger is connected to one side of the clean air pipe after the air filter. Therefore, the pressure difference between the crankcase pressure (PCC), the air intake passage (PIM) and the clean air pipe (PB-TC) determines the direction of the crankcase blow-by air. When the supercharger is not working, PB-TC>PCC>PIM, the blowby gas path is the first separation path, and is separated through the partial load side oil and gas separation mechanism; after the supercharger is involved in the work, PIM>PCC>PB-TC, The blow-by gas path is the second separation path, and the oil and gas are separated through the full-load side oil and gas separation mechanism. The two oil and gas separation components can separate oil and gas with different loads, making the separation process more refined and improving the separation efficiency.

Claims (4)

1. The utility model provides an independent oil and gas separator in two-chamber which characterized in that: the device comprises a separator body plate, a full-load side oil-gas separation assembly and a partial-load side oil-gas separation assembly; the partial load oil-gas separation assembly is arranged on the separator body and comprises a first coarse separation mechanism, a first fine separation mechanism communicated with the first coarse separation mechanism, and a crankcase blow-by gas first air inlet which is arranged on the separator body plate and communicated with the first coarse separation mechanism, and a first outlet which is communicated with an air inlet manifold of an engine at one side of the first fine separation mechanism away from the first coarse separation mechanism; a PCV valve is arranged between the first fine separation mechanism and the first outlet;

the full-load side oil-gas separation assembly is arranged on the separation body plate and is positioned at the opposite side of the partial-load side oil-gas separation assembly, the full-load side oil-gas separation assembly comprises a second coarse separation mechanism, a second fine separation mechanism communicated with the second coarse separation mechanism, and a crankcase blow-by gas second air inlet which is arranged on the separator body plate and is communicated with the second coarse separation mechanism, and one side of the second fine separation mechanism away from the second coarse separation mechanism is communicated with a clean air pipe behind an air filter of the whole vehicle;

the first coarse separation mechanism comprises a coarse separation cavity arranged on the separator body, an opening communicated with the crankcase blowby gas first air inlet is formed in the bottom of the coarse separation cavity, a first partition plate extending upwards is arranged on the right side of the bottom opening of the coarse separation cavity, a second partition plate inclined to the left side of the first partition plate is connected to the top end of the first partition plate, a filter plate extending to the first partition plate is arranged on one side, close to the bottom of the coarse separation cavity, of the second partition plate, a third partition plate extending downwards is arranged at the top of the coarse separation cavity, and a vent is formed between the third partition plate and the second partition plate; the second coarse separation mechanism has the same structure as the first coarse separation mechanism;

the first fine separation mechanism comprises a fine separation cavity, the fine separation cavity is positioned at one side of the coarse separation cavity, a fourth baffle is arranged at one side of the fine separation cavity, which is close to the coarse separation cavity, air inlet small holes for passing oil gas are distributed on the fourth baffle, a filter device is further arranged on the fourth baffle, the filter device is attached to the air inlet small holes, an air outlet is formed in the bottom of the filter device, and filter cotton for filtering small molecular oil gas is arranged in the filter device; the second fine separation mechanism has the same structure as the first fine separation mechanism;

a first transition cavity is formed in the area between the first coarse separation mechanism and the first fine separation mechanism, and a first small hole oil return groove concaved downwards is formed in the bottom of the first transition cavity; a second transition cavity is formed in the area between the second coarse separation mechanism and the second fine separation mechanism, a second small hole oil return groove concaved downwards is formed in the bottom of the second transition cavity, and a fifth partition plate extending downwards is arranged at the top in the second transition cavity;

a first fine separation oil storage tank with a diaphragm valve is arranged below one side of a fine separation cavity in the first fine separation mechanism, which is far away from a coarse separation cavity of the first fine separation mechanism; a second fine separation oil storage tank with a diaphragm valve is also arranged below one side of the fine separation cavity of the second fine separation mechanism, which is far away from the coarse separation cavity of the second fine separation mechanism, and the second fine separation oil storage tank is positioned below the PCV valve;

a one-way valve is arranged at the communication part of the first fine separation mechanism and the air inlet manifold; and a one-way valve is also arranged at the communication part of the second fine separation mechanism and the clean air pipe behind the engine air filter.

2. The dual-chamber independent oil and gas separator of claim 1, wherein: the separator body plate is provided with a mounting hole which is positioned between the full-load side oil-gas assembly and the partial-load side oil-gas assembly and used for placing a high-voltage coil.

3. The dual-chamber independent oil and gas separator of claim 1, wherein: the separator body plate is provided with an oil filler cap for adding engine oil, and the oil filler cap is positioned on one side of the first coarse separation cavity, which is far away from the first fine separation cavity.

4. The dual-chamber independent oil and gas separator of claim 1, wherein: the peripheral edge of the separator body plate is provided with a mounting screw hole and an overflow gap.